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性的に敵対的な特性の機能,発達遺伝学,フィットネスの影響は,性的に敵対的な特性の影響である
Abderrahman Khila1, Ehab Abouheif, Locke Rowe
1Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 3B2, Canada.
Science (New York, N.Y.)
|May 5, 2012
まとめ
性的な衝突は,男性水歩者の進化を牽引する. ディスタルレス (dll) 遺伝子は,成功的な交配に不可欠なこれらの特性の発達に不可欠です.
科学分野:
- 進化生物学の進化生物学について
- 性選択性選択性選択について
- 発達遺伝学 発達遺伝学
背景:
- 性的な対立は,進化的変化の重要な原動力であり,特に性二形特性の発達において重要な役割を果たします.
- これらの特徴の根底にある遺伝的および発達的メカニズムを理解することは,進化過程を理解するために極めて重要です.
研究 の 目的:
- ウォーターストラッダーであるRheumatobates rileyi.内の性的な紛争における男性特有の詳細な特徴の役割を調査する.
- これらの性二形態の捕らえる構造の進化に起因する発達遺伝子を特定する.
- 男性の交尾の成功にこれらの特徴の直接的な影響を示すために.
主な方法:
- RNA干渉 (RNAi) を利用して,遠隔の少ない (dll) 遺伝子の機能を調査しました.
- 男性の捕らえる特徴の減少と交配の成功との関係を調べました.
- 性選択のダイナミクスをよく理解したモデルシステムで,発達遺伝的アプローチを採用した.
主要な成果:
- Rheumatobates rileyiの雄性アンテナの特徴は,抵抗性のあるメスとの交尾中に構造物を掴む機能として機能しています.
- ディスタルレス (dll) 遺伝子は,これらの男性特有の捕らえる特性の発達において,新しい役割を果たしています.
- 特徴の大きさを把握する段階的な減少は,男性の交配成功の相応の減少につながり,特徴の詳細化のための選択を確認しました.
結論:
- 性的対立は,水中歩行者の特定の雄性捕獲特性の進化を促した.
- 古代の発達遺伝子である"ディスタルレス (dll) "は,これらの性二形態の特徴の進化を促進するために,コオプットされた.
- 明確な性選択の圧力を持つシステムに発達遺伝的ツールを確立することは,進化的メカニズムを明らかにすることを可能にします.
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